文章摘要
林书玉.用于超声清洗复合振动换能器的研究[J].声学技术,1994,(3):119~123
用于超声清洗复合振动换能器的研究
High power flexural transducers for ultrasonic cleaning
投稿时间:1994-03-07  修订日期:1994-05-30
DOI:
中文关键词: 夹心式换能器  弯曲振动圆盘  有效机电耦合系数  共振频率
英文关键词: sandwich transducer  flexural circular thin plate  effective electromechanical coupling coefficient  resonance frequency
基金项目:
作者单位
林书玉 陕西师范大学应用声学研究所, 西安 710062 
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中文摘要:
      本文研究了一种由纵向振动夹心式压电超声换能器与弯曲圆盘组成的用于液体中超声处理的复合振动辐射器.推出了恢复合振动系统的共振频率设计方程,分析了各个振动模式的机电转换特性及其声波辐射特性,测量了振动系统的共振频率及其有效机电耦合系数.从实验及理论结果可以看出,振动系统的频率测试值与设计值基本符合.在一定的共振频率上,该振动系统具有最大的有效机电耦合系数,是一种很有前途的功率超声辐射器.
英文摘要:
      In this paper, a new type of ultrasonic transducers consisting of the longitudinal sandwich vibrator and the fiexural circular thin plate was studied. The resonance frequency equations were derived, the effective electromechanical coupling coefficient wasmeasured and the radiating characteristics of the compound transducer were analyzed. Experiments show that the compound transducer has many resonance frequencies,when the frepuency of the longitudinal vibrator is equal to that of the fiexural circular thin plate, the vibration of the compound transducer is ideal and the effective electromechanical coupling coefficient is high, therefore, it proves a promising ultrasonic radiator in liquid.
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